Issues »  Volume 42, Issue 4

Superplastic Deformation of 01420T Alloy with Initial Bimodal Grain Structure

D. E. Milaya$^{1,2}$, V. P. Poyda$^{1}$, V. V. Bryukhovetsky$^{2}$, A. V. Poyda$^{2}$

$^{1}$V. N. Karazin Kharkiv National University, 4 Svobody Sqr., UA-61022 Kharkiv, Ukraine
$^{2}$Institute of Electrophysics and Radiation Technologies NAS of Ukraine, 28 Chernyshevsky Str., UA-61002 Kharkiv, Ukraine

Received: 05.03.2019; final version - 16.01.2020. Download: PDF

Mechanical tests of aluminium 01420T alloy (system Al–Mg–Li) specimens are performed and temperature-strain rate conditions are determined under which specimens of this alloy with the initial bimodal grain structure exhibit a superplastic effect. Structural changes occurring in specimens of the studied alloy during the superplastic deformation are investigated. As determined, during the superplastic deformation the microstructure of alloy specimens becomes homogeneous and ultrafine-grained. In the working part of the 01420T alloy specimens during superplastic deformation, as a result of viscous flow, fibrous structures are formed. They are localized in grain-boundary pores and cracks.

Key words: superplasticity, bimodal grain structure, fibers, aluminium alloy.

URL: http://mfint.imp.kiev.ua/en/abstract/v42/i04/0511.html

DOI: https://doi.org/10.15407/mfint.42.04.0511

PACS: 61.72.Ff, 61.72.Mm, 62.20.fq, 62.20.mm, 81.40.Lm, 81.70.Bt, 83.50.Uv

Citation: D. E. Milaya, V. P. Poyda, V. V. Bryukhovetsky, and A. V. Poyda, Superplastic Deformation of 01420T Alloy with Initial Bimodal Grain Structure, Metallofiz. Noveishie Tekhnol., 42, No. 4: 511—529 (2020) (in Ukrainian)

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